{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "996978306",
    "entityType": "User",
    "nonce": "0x2c51b01b978fa393a5494a065fa458a5faabdc25b613d3c1f31c2a0803beb970",
    "signature": "0xb516ea2f307765c5c4306075ed4017c5125f84461f1282087a899c6f4772009a1f752adce170461f7a90207d8cf8d07b45cf70e0e986b0d5c9df05676a821b7a1b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}