{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300785",
    "entityType": "User",
    "nonce": "0x3aaa9f096ffcd63974c1756ca624e7c4670fc09f4e6a753892a3240f4ac1b234",
    "signature": "0x33f8d57bf41b5671a9a32caf0574b740e8bc04d5ab59a09c76187abdacf49b7a4e3a0c47b191ca24ae28fd1488086046264303392825081c801fd6a99b20f6ca1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}