{
  "manageEntity": {
    "action": "Update",
    "entityId": "559294211",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3099f2114dfd8f6d4c3fd5f1e62c4a4c772025b677126fa2ad01cdc6106152a3",
    "signature": "0x230a3990d6fc09042d6ebaad3eae53cc0991157f9f5496cddc3d8a39b554745e70dfdd3380ee74338a185f33a2342a23c326f5055189b0d3e23d0c16fbaaf1b51c",
    "signer": "0x2a4d25c1632c56B024F0b1D1E12D7F57432798c3",
    "userId": "559294211"
  }
}