{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721044",
    "entityType": "User",
    "nonce": "0x5ef220658e85d6eb3875914e758c40c2180b5aa7defd8df153111737cc2ff6e3",
    "signature": "0x7f3c40a58bf19a97f0431faa25bb384ee2356ca74b6e12a70aa1ca2e521d860803bf3bdc04b0f18f7b72713c1327de792ae6eeee7595a53d81a56d614b952e751b",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}