{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "147560789",
    "entityType": "User",
    "nonce": "0x19d0377e8bed2e90a98ab6c2b7229904c93f3056abba591b450e0e4eb5c733a4",
    "signature": "0x90e364abfc7b47cde71b170927b5b1e5f7d740dfbd15f2d75fbc72678aeefc87325fb911cab086dfc4333c4e9c1b442faa96418d4080c333e52df63bea28a7f61c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}