{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x2e2a19bb32c710f81acc9c9061de5b21620b5f01bb2cac849ec488dfde4321cc",
    "signature": "0xa8d5f66a843fc16803dc4ea394a4d0625eb2ffb2e031ebcfa7ba4c75407c1b4653d5dd1921a9eb86e16530b82cf8d9d813991100c146dd9cfca0feeaae26d16a1c",
    "signer": "0xDC3F1116Ce7B919D352b15Bb4C20db6Bd453F50e",
    "userId": "583138572"
  }
}