{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943263428",
    "entityType": "User",
    "nonce": "0xfde7a5a62e90dfb0f18977de1555462dc0cec7a0e0fefb8fd4bfd1818d559fcd",
    "signature": "0xfbc7ae56226a7f301b98d0d56dcf6b757f4a5a2830c4ef0c581bd67eb2da5af60bdd793a422ba782a83443f657a4b8463c8fea148d049aadeef303cc886f241b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}