{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "116542",
    "entityType": "User",
    "nonce": "0xfe1f098e29ef1226957f0a5a5937b69dbedeb24dbbcc1b1b1c4a2947048ce8b4",
    "signature": "0x617b0aac5eb6f0621119deec83825fdbb017d500a4e1d161dd3a4e5187617857197cb3aa411e71dda8b10f657b5608c6638abf1e0044a12c8012804a2690475b1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}