{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129439",
    "entityType": "User",
    "nonce": "0x4168fe124d71828bddeda90b49211b05183fa977d80f3933da0316920dd09c84",
    "signature": "0xaa776ea8d3364f3655d4d75fe37a327dd555cc7d891734ae3fa0f0dae72a4c3f4cd51d23618dbb42c99ba0c430bfaf539b3e6b25120c7afe9b7830e5eb435d531c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}