{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x74493aa55dbdbc1804e91cdfe9226d07f66029def58993a40030215d1f511a1e",
    "signature": "0xc529744cb3a918f7a0f0cd7c8e9a91ab6aedc93a52c4369a1034bb06c276bd520d18cde2fa6e62f012be98cab2247c82c2f9b082e29dce66e669ca71751cd1d81c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}