{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7375",
    "entityType": "User",
    "nonce": "0x65126f86ea58d7a8d792f5e171cdae76bbeafe3897959a3db6423ebdae362721",
    "signature": "0x77a8c64767c593761e018d9f0c4a7c612a6a26a93adc1ed531f5d2ffebcef4d07afdd8cfdc47ad34e63f9a5e786d8a05a8b64ac8a753790f50ccf6861d4ed8a61c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}