{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "725568",
    "entityType": "User",
    "nonce": "0xf436c9c7b5c0b29efa32beb46f6ac29733f7209718fc3fc2db08a02ecf49175c",
    "signature": "0x65bc0de6415c30ffbe4cfc26937e6b8bb66e214f0463660cce9821420c35d02934588eeed20c4a8b8240db5c8a9d433f78d89a752df80fe22a04ce65166692101c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}