{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0x20294f2134c3333a61c31b0f8fa6d2f2b5931b93c6a57f43e4bf74e89cd4e74a",
    "signature": "0x042f6855243ebb8e19423cf18eef6c4042a927c33b4ca3664934d5183ce9b2b6103819367b4fc0bf938abcc0c86aba040022a6e7bf8c684d99109d79493d561c1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}