{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1088310",
    "entityType": "User",
    "nonce": "0x852125dac6b53f40f70f26d5432a227be07e41018f816657e59474f1c679a2ad",
    "signature": "0xb515cc64e062e1a0f2c8a4e1038a65b128e4de826a4c1f729b5401f704ffdd842f5e9f9158778f01f56537a2ac7ff08d5f431be963a1fe3219e9ecf3d7e3aaa61c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}