{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "905219052",
    "entityType": "User",
    "nonce": "0xd8ed241da81084686cecf29c88cb7f5927e493ecc1c3c0605fa28ef56ad09f48",
    "signature": "0x7ec5c4c18b8ae4e2bbb62f412cee52b3d113c4d18028092b9804c0e31a3444415a99bfda33c867073436cf8d703593fb676942ca8373ebcf4b99b3c8d733d72b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}