{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb492db80bd240e33b160b5bdcf246829cb4009fc03aa68d0a498886f87b5a704",
    "signature": "0x3621f2a129587a22c6eff1a0067692188638a10db694de9a22e9870d3f2dd5312c2b4767931f52322a558bdabd8f899e7f17954a885efdaae3ff3111ebb563ef1c",
    "signer": "0x316F5F31b9572b378E7ffacEF4C57198fF9D680A",
    "userId": "481585177"
  }
}