{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc44e61b563c6665ad80daaca6d84dd9ddb1ea08b1f951630c700cafd0b128d8c",
    "signature": "0x8a757b1d074723264c7bb33d003f5bfe9ece49a8b92f1d75b5ba7c02fcebb3e26a31b9c1915674618fdd571075c68a9abad9be0711a0bada1e17c2b67e92b0891b",
    "signer": "0xBF5C14482755C9f13F3edeBD86bC71f2BB8ae13a",
    "userId": "537050745"
  }
}