{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x2aa10821be104bbce5ea215c07bf624b614f0ae67c2cb9b35f2a053cc25cef6c",
    "signature": "0x8691d18059a29fba4da0e4be3aded736acd6dc4d8a381db66c7b8b0782dd3357222580205387b66b8074f847fe541db593da60194e2bccbc09920815326c98711b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}