{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874277249",
    "entityType": "User",
    "nonce": "0x53c8b625e7a6bfde0431473d0cf64bff440c062fa229d9cffb50f25d4c806bf7",
    "signature": "0x1dcb37e95261a306b11baf571401cdb4063d88ca128e0374f8a99a2ba5a60f6978d1af0d58f1004be8239068ac5e91b071b6e82854ca63c97086a81104a1eb1c1b",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}