{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54432",
    "entityType": "User",
    "nonce": "0x4b71d7a32ed4bb10d4f581d31671728e1cafde9d7c90b3c00f0784d2cb177bca",
    "signature": "0x7062c167f3df478bd94ededea1c01b1107f25f555be64f00056735857da40ec71e5fecb67d942b48795ed2cfc07218bdd3fa4a3e998b7afeda7616f3e4cf40a81b",
    "signer": "0x449418feaBA25A39aE410F0c64EB2473D7e608D3",
    "userId": "629879678"
  }
}