{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b6093eb445b84f5f56c11ece534f854419eafaf354c940c949430720031af9b",
    "signature": "0x8ca766a6c4b7b4c253e36cc04b16f6541caaf188a7456135cccc4a345a9788361187c78e059fa2ae60cf24cdf8ea2ade6aebf5f6feb86f3268b50c18d20cb55a1b",
    "signer": "0x4E073b7076371ff6Bf848d0B4abA785B38B5ff1E",
    "userId": "303393509"
  }
}