{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ebfb6b04d1b2b10d1b79282662f4e09a05de3e60c67f3b12cc9dce8d3408b59",
    "signature": "0x72c6190779661b24aaa0245886ad168ac8dfbcf84ea0ea70dba79c682e0290540407da55fac03e64b851516e17fc99392f993578fec3ec2a6909ad40ae77e60a1b",
    "signer": "0xD3F0170aBf4a7ec16130f1Af3E569eEb37f5C63A",
    "userId": "837323124"
  }
}