{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2665",
    "entityType": "User",
    "nonce": "0x3adb3aefe18b1f3179ba8cb65272d88e5436fd91fe3ed310852920a9aff0bf58",
    "signature": "0xdc515ff3a3b3d5eeffe2cb0653dfdfbfe84a5f19ae71c110af37b18cba6ba8c707ec2db4d7abd99683eed911dcb258267aa38e4a989b02c08cd8baa5496da6091c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}