{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0xf994a5bd861600a69b776a03bd8d3c41fae2f92830aed0eaf01a74bb36e1ea5b",
    "signature": "0x0640ee6b6d33ed48557f2a5bf7cb247d6bf08003f2934bff88bec4349310b1df77689e2868c86fc86bae513dfa567bae8ac6ca2a5c02ead2d3bc0e8005fc04ae1c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}