{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951995708",
    "entityType": "User",
    "nonce": "0x831ab4ecb891e89c99d7c59dd4bb57a65cfd6353ab0d38584ec842497902b61b",
    "signature": "0x56f2e80e399999a32ed29eed00517b0f54164b7043ce619a78978d8ee817c33a1c9727febd5e9f1a8897ca59fe665f9855f582746022244ecedcf29f9da74af21c",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}