{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x4131ef3987928acf54b2ad07f7daffd59d13cc5446da731dd02fbcba42f4c269",
    "signature": "0x1a794763db3bb004248ba1a682b074e2745febbb884e23093e376082703b485b3a68a078c6341ec0d85918c9934eeecfb5805f63e7bcc184239a10004d5a4ca91b",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}