{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "488430169",
    "entityType": "User",
    "nonce": "0x1554da31e6c5381cca638f21689b95d1249c312a77772893ad1dfc9d4f0def8d",
    "signature": "0xea6c676ef001345d3244b0634d0c970777520f29cd480f50f21db5cd6018a0a862c2082a1ab0be6d8bc057619ef4195baa1642492e2a79dc58064a69e61d99581b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}