{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d317401e3bcb6fbca588f07cae01051133e826e66f6ad36d0c205c9d71c42e7",
    "signature": "0x16719ee59989ae126f43127af21abfcb749c0334d762b8a4fef21ea500505d310e0af2a47db11c3dc5c6622c14af0afb7ae4ae64a3a8911b0d7880c58255f0e41b",
    "signer": "0xf1f9a3dD79fc96Cf365C6297693523Ab602b8C6f",
    "userId": "478795474"
  }
}