{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831215165",
    "entityType": "User",
    "nonce": "0x90d3c5bccd578be33107046c592d5c900c9bfe7a0dba42b3274706ff2e9f2269",
    "signature": "0xc231e001c1d553a123d52112067321543c4acf922efd7920533b19b5e6b4a1e35802d433426af265ce7e77f35f30b96a1ba15c64ceae1b86fa10423bff1da0ab1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}