{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318873",
    "entityType": "User",
    "nonce": "0x44693c4556ec70e0d5d05657182bd0d187bb821f93c4dd5e02a8d36c1f6b8e84",
    "signature": "0xdecb91f74a75694a86511d326a2d5fc3ddbbb3adf3aeaf15d67743319a0bd98d6f08b16a0b5f3ddc7092459a6b969d7813700927d38710c2f52a2bea8d3297f41b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}