{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730944",
    "entityType": "User",
    "nonce": "0x40776030d2dd0be9c2aa07f1dcdf954fb4d032e339994d080c24f84f9d274af3",
    "signature": "0xd8c77ffacad1d1fb640697d037c0619e656668f8d0c0481cb8e6ba847465b8630c6c698bd6561b39d45136157ee4d113f3a2a09d5f71f2fb35659c790229b67d1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}