{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1440212",
    "entityType": "User",
    "nonce": "0x4b4837453ce6bbfecb599846b4da6f9dcba21a942f4575cae600d91b0366afb5",
    "signature": "0xfa65b7917eb2abed1c7caa7c07c6c95ab7d5083cfbe1f84ccbdb88c5ebb0b7946967c8358d35e0c3fc699788a8f04f8c0b38c2c2d8b8fe2810c080eb01e7bd171b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}