{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd5797bb796b77f387c463403f12503905cbe77ceedf2d442b9daf5f306afe865",
    "signature": "0xb88df5393650ec7448b3f334bb83970a4715820e3a078285ae707540b890d58266960dff5346c60c19f34c470d70011dce05ff347451d045f0c9b37a793db8dc1b",
    "signer": "0x50bFAcB550dd10f7b1961E18C6e92E3F41Ef306B",
    "userId": "602578939"
  }
}