{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240783916",
    "entityType": "User",
    "nonce": "0xf6318f5be5d98f4e94c539fa1cad0884ea29a64a9335d07a2449fb43cd46a000",
    "signature": "0xfa300b345ab1abda3d51a733eda1cef52d741e94e33229446ec1db73ec29bed968e9e591a546ca128044b56ffc40b11c3ffc1d0114decaf052a6b43a89890f001c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}