{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x848fd88f2f5f55ad1e4380febe71dadf1c24cb7091be788b396ce0776e926faa",
    "signature": "0xc382dbbd0853e0dbdc666e4fd2e72b320ff1532b1e4632db6051125f6c87bafe1997c04013e9214a70cb4dd7875085961e98ce1cd174e970abebe24155ed33ed1b",
    "signer": "0x57564cd9addcbA964DB61E2869871202F1DAeBF5",
    "userId": "262032562"
  }
}