{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x19746062a97d46c4a182f0eea070a6343247c4ba46934a772f9db65d592c9884",
    "signature": "0x025b48e91d94436abe1896a22f05fbb50424a2464becc21cee706f9f3cf5b8d670d4f7761d83609a4ebc05d1ca04dcf31aa2bcc5db0b28144d6d94330ce30a771b",
    "signer": "0x8Bd0Fb3FB3c18B08689f1275f54A507aFd71B6b9",
    "userId": "959507505"
  }
}