{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4ff1d7ca3503d8f9bdf8fa1b8819c982b8c7e0a7f58d3dbccb73088927aa9a1",
    "signature": "0xb484c39c94bf89f4cd32cdc5d79f0b3d4202ccb8d123f41a9a37f8c8dfb7f4276957f193e872e36304462129abf6d6749578fc2442228ddb26be7223577a4c471b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}