{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754884",
    "entityType": "User",
    "nonce": "0x0b5dd701d5fe61c08f2c07d796c59c02c926a20e713f2ddfb53286c2e05f2a5b",
    "signature": "0xfdf6d2e741d0701a26d11e9c021e72b891b2cc71d3c037c6524a639d946ef2ef0b069562c5c736f603923472a9687c7352d3173c69c682447f991e5042df3f451b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}