{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556",
    "entityType": "User",
    "nonce": "0x8e03d97fc0535a3de12478e95da1d325aa2ffea8014570addeec9e9ae0e2163c",
    "signature": "0x84a579b3f4b2d1a82ba29e355b7309baf9bd0e4c773fb3804b4c6caab6077b992ef66dbd2bbfb438b0ff5a2b3085012e450fc6eabed0583d9d0305d644fe84ed1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}