{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c7ebc3f1463eb5c6dae10ecc09050b238b4fba4cb99080ea052235edc4fd918",
    "signature": "0x15f787bb8f13cf0fe5a8d8fa8694895ce4d757e23cb882497922237bce04a2a3559ef5b87592edaade846f6a7f582949b592083b0992a62766192d77b66221e21c",
    "signer": "0xaB187024B71c661fbAEcAc54b5dAb20a2701b7bD",
    "userId": "785276209"
  }
}