{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0b13b9d313567a9384d4e580eb73d605083446b2ff7555b494df767a07de793",
    "signature": "0x9170dac8842def03240a4c48a3219d8dda4dc146317b544a4b3f7259ee1590dd3ffca66a085830b72b226facac04d8c73742401533090f6ac9d72bb162297ac81c",
    "signer": "0xFeA2F48F052cB1BD7DBA7286864B76929A21030F",
    "userId": "444978213"
  }
}