{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa46d1f3ed62b473fae488b67924e433c5d5938fc5b26b27acad004cb514437f7",
    "signature": "0x53f1c30b50ee2cedc11c5ce605441afa47793358dba5170788c2309df595bbeb1f53b01c43bbf53c13fa4aa53639b3ddbd58757878a048ad7b08de3d86be27c81c",
    "signer": "0xc2866e2a73cc1f91d6F5c62287152F2394D1979D",
    "userId": "216678909"
  }
}