{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa5aeabb16e75824c0c2ca30b6c0b3f99cddd5b6e97a7fbe4a296ccdda17dc2ca",
    "signature": "0xb2e19eb8193f1e98659ba064da3103bb149f1e45faa22f46dab881bcaa97acd60d092117500dff33e69b046a7d0be04e3f29f70885b0e68e0278c7e3f7dcb1b21b",
    "signer": "0xA9Fcc0C9caCD5528EA8E6874754D8533Ad1a87F4",
    "userId": "293976821"
  }
}