{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64159186",
    "entityType": "User",
    "nonce": "0x8f52dbd51f96e29f1f93dfa6fed252808815714a403a51e0268e0eee646109a4",
    "signature": "0x1e04cc4ca40f86b6e42d40694c214ed5bfa4421a2822c208024e6f4fc9e0e09775b1b0c644caa18b5f9d7b2b3322adb0f1d7ffeadf9b3af51ab8f12746a272b01c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}