{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d3b1dba70caf79f7ecc55cdabf3c9075fd18918a0eff89ad2aa996392538e6e",
    "signature": "0x065d7feb35d0c74140d8c5ccb23aa3815ed83d8f87d1f6bfaa3754178c2f3d635ef40052567d7b029cb937f0779d202f6ad74c5556ee02a2ac4f11174ae8109c1c",
    "signer": "0x765f679C4621fC391f9c6805c64558B1F96335db",
    "userId": "108115524"
  }
}