{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3de43e0075022cec28ea1a906760e01c15980eb4c0498bd62edbabc881b8128",
    "signature": "0x1ef3acb7f684bdb931afabe306dfb0b4173967ad34c2960bfe5d2d765e907c8a389126e2bb95dbeb34c2a22c6bcedfaa46f90b8b037a20103c6ca5079249cd851b",
    "signer": "0xB1ABD57AcD5737b98D385BA98E5B14293D7A1fD4",
    "userId": "801292109"
  }
}