{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735980234",
    "entityType": "User",
    "nonce": "0xc5ff8907aa838cc951d09bce698de0a21b94c99aecadaef72703ceca8d4ecde7",
    "signature": "0x21c015fbd46edbc5440b0565fab74c225e1d0b751239e2acf87204ec5d5b1a22761185268b436ca4744fe112c417676cd89984c781ff24ecb5397027839046911c",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}