{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1212434",
    "entityType": "User",
    "nonce": "0x4a2acb3031a9574f022e5d5d837a3c69453b61808360a30df60cd2ba643e4009",
    "signature": "0x0a3a540ec93e7ba237b393f5267b86f18eaa9777f34818063f7cbd7e507311a7630062db0216b1cc90321c4fea45c1b44bfdbc686922dfea0c7282517d5f35571c",
    "signer": "0x9731c27a228046e65489b08a1C3f1A64f7093B55",
    "userId": "848409996"
  }
}