{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf7143126327f690475b6a3465ebaf60be248f1b5ed6b02c58ca1fc6e6237bc09",
    "signature": "0x8a94db3c21826032231f474043e7c9fe8da30c8b59a914b39aa30d6b0d8402961e91fcd30531e52759cf5246cb018bf0596ff6e807b54460167d9fd583dedc7e1b",
    "signer": "0xdb3Ce61d44D9e0d07fd2c96c9d3eEfe4ff9d1DFc",
    "userId": "378891044"
  }
}