{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "275305",
    "entityType": "User",
    "nonce": "0x9c3c163abd871307a74a2e6065fa62a609a6b1a4278d967b0f9c14d84324dc91",
    "signature": "0xa40d64eb3f1e5987c774c08cfa2da4b2ddb7ef67a18229fbab366a219850bdc62a370d3d39f920fce6fea65223ad94fd1c3187f75ae8b492e5dbdce4d13fca131c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}