{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820855708",
    "entityType": "User",
    "nonce": "0xcd2c8365b8b85c825847602aadfcece6f8ec995b3c8cc3ed133c8b76d21ef5f0",
    "signature": "0x2086f6c45f2090f4e4e481f515bce278de6f25c7c407d375d4b331a369c870a7087fea4fba9309eabe20ce8fd21f42cc56a388fc89d4084f7d008047856016e11b",
    "signer": "0xa6537b4A64192585E782889E1230Cb8E13E01fd1",
    "userId": "154253595"
  }
}