{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355212",
    "entityType": "User",
    "nonce": "0xd689d056d0eaee54818b8c0942d55695fead00340f4f1638f77cc512a7694d29",
    "signature": "0x79358bfb2f8fa712bec2d8c24a3fce7bd1dc384749bef95ee127ea020c0677a6212b3868c1fc7cf772ede39e9afa240894ff32d9c6f362cb4fbe58aeaecd74d71c",
    "signer": "0x0Dd73e4D3bAa9c25c83FF36DdAa22F88B115b08C",
    "userId": "12728"
  }
}