{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189818",
    "entityType": "User",
    "nonce": "0x7ae38d2f75e430ce6f8a1227b10f4a0c3c3e61f19ea5d73e81c104d7286c1857",
    "signature": "0x1b85127b12aa8bbc72b6885df2f4c2e168b4435576494b0c7ab348297d85794813f218912ef078412edea8e93c3f196c670b80afa2e14c55deb798c717eb15b11b",
    "signer": "0x74890D1DB0eadA2cc7FAaEC8D37F9d9aA80cF5B5",
    "userId": "770154030"
  }
}