{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880825",
    "entityType": "User",
    "nonce": "0x3671f4c9e25723ee53683c3d19d78c7a88d11c38adcd012b96b090e819326311",
    "signature": "0xe4fea668f553e8eb28e0adf1a30e3c4e4a150d90329928b49620080b01c7f12112c3babd2f85acd22ac510cf112a4b8a4424387ce45b83319c72249b8b2679641c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}