{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa89a066bd8c1b02d580a66996e101074ca966eb77ff4f9412fd1e07dfb69e314",
    "signature": "0x6bea94d337907d1b4fde25bc12eaa38fe9027d01983e7e39065b47360f8a0657629e098a4887ea736c0ac3a0e69ea7aace5e644bbdbb009c4ff67efe92b2f7301b",
    "signer": "0x203D63822a158fD30F14dc7c83cAC4Fe686d6478",
    "userId": "83259808"
  }
}