{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "817339612",
    "entityType": "User",
    "nonce": "0x2473bb59e1ec9a283ceab54c1a7cde7d74d7c79c9cad0d83a09d30a46ddd2ec1",
    "signature": "0x840a7e6a3e1f3e24407237ec28e4f1c9a8e202837dfa769f8b78a8ae8d8a0d064a0f578a2a1d89ceacc6f599b01a827cf5853e5228f37806153a758f5b9e67e41b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}