{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2554",
    "entityType": "User",
    "nonce": "0xca6ca28c982f89c28cb98e390255dabd3a02260bc8c86370d573a239ebaf55d5",
    "signature": "0x20502447bffb66ef67dce6f8a3ddfdc22776998a3c18f17a816874727136895214a0cc31253c28dc4ce54b4c24220dfa50aac5cc9c0e927940f30062871714541b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}