{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0xc147ffc909f7db010d56cac1f424aee7917e769456487848532aa035e1b76fd2",
    "signature": "0x5c73f8d4a3287af1836480b44f6e7f3f410bef5aafed7abed487460dd9eb494927979923c2d44f8459b15f93cc10fc8d3a6009811208da4b10534056983896e61c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}