{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1894938",
    "entityType": "User",
    "nonce": "0x18e7858786bcc5f72379ef255d75a1ddbf43381ac7570ea5b7dabe77a847abed",
    "signature": "0x6ca2774b10244f7feec23e81e8ec8a7941e6f5ed1b30975aaac9711d041e07394421a1a20db45e5509a64e9ac9bfc9f396f5a048d52b9dc95f99d7eb43408e0c1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}