{
  "manageEntity": {
    "action": "Update",
    "entityId": "648743045",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa7840ec3b0a5d2f6696023f3d97cbca445e71be9093de29d1fbe6a00aaeb5613",
    "signature": "0xe280ffdb6344123fdd9c0c63b8fe79da99704726c5a2547337b3105ac5238bd40a1d8629f66a0a4e8c94f5182b750fe424ff236285a38fd83447817454e60b181b",
    "signer": "0xCaE1ee7dc4DB493ceab857fd89C09fA305C4c5d4",
    "userId": "648743045"
  }
}