{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450694809",
    "entityType": "User",
    "nonce": "0xda18416b1e7ffac6f1bc9a8e0deea91e30ba730935f0d1a836b73e25ec5af148",
    "signature": "0x279804e4c8955adff5be64b9fd32d0024802c3b310b09c09af95a6e00cfb78287181f1d2cce54d77a0812e7bab7b2a850c1b5f54536de18d6f863f63489c8d111b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}