{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273387437",
    "entityType": "User",
    "nonce": "0xb5e3d2d8fbfb450acd636338dcd791c51389578639886a00f177b2c796c72387",
    "signature": "0x36fcba5c7fdee1aebf4d88de5cee6075060cbbb8c24fd51c1737efa0b4e1fb9b1efd40780c1629d8f98542ca2c8ebf7ee4f99e221459302dd7dfae42b5cd86b01c",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}