{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "45670",
    "entityType": "User",
    "nonce": "0x6c269af20eb2bf4f1113ab259a4ed714ca3d3902e8f670ca50b73eab96c72a1e",
    "signature": "0x2c514c5880ff0213491fd222d81824f7144567299d362533941af24102944405448b24094644a05e02e6c27dc4f7c2d72e3361aee768d40269ac1d14025939671c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}