{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515821762",
    "entityType": "User",
    "nonce": "0xbb72ccf0871c2915ad25d42d3caf7bd8b8c96e261f97f9c5d42d20faf35ef883",
    "signature": "0xb42d1c6810aac0f0268fdbc65872bf4bcb8c467f0bdba03ef359b184113d50cd54c10cc6c2f50aa52117aba665c6533b69767e772ef4b70cb5a3ef70963fb2731c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}