{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1804411",
    "entityType": "User",
    "nonce": "0x8a3c3718a91624443e33a0046ee8f7549571fd7c4d29ef518e56276cd0b33877",
    "signature": "0xf292a7bab5fc3d5a2a9227a13a4a36308f04b802af825b401f623657ce03fda45b7c23832315c162abfee9db17e6e5285ea09f915f19e086dbdb4151536c52c91b",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}