{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "644264",
    "entityType": "User",
    "nonce": "0x5d7432ee462ac8727b366669788b2d07228beb57e703e00d56747951133dfded",
    "signature": "0x9341eec83a21403252ea5d977a4016d18c36a020558e55044d61376f088bb00f6ff6d14bb15b1b36cb88c425796c4cc3a624b6ed6e86f8ab468e8b292c821c5c1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}