{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680645058",
    "entityType": "User",
    "nonce": "0xa67298d990bd3295d74a0ec2592f78683e08d6e54ca8382f89fc8d2b91451584",
    "signature": "0x1e09ef1ebe81accaf357c870e82a42fa27d527a33df0fe97ce337af5028c62fe50a993433cf376ea5445f6f1d69fec941132dedc168e058f1150904f9ce34bbe1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}