{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0xcdf1dd9c8df9ef43177ad458d9becbb9e5f448909d261210e8427a2a5910bc49",
    "signature": "0xf97f974b047b3ab39cbda87fadaf549f5c0139747a45a95e08623c698ff4085f1b1f82a7783abe5a118a4e8e8dfe642f1a18b0924ffc1be6d1b95b3f072a4cba1b",
    "signer": "0xE280E847d2A686a5B17DF698d98323E53A33789a",
    "userId": "915319400"
  }
}