{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "434118395",
    "entityType": "User",
    "nonce": "0x5968f83f2877c50acceceac3f5435f853b137ef56034724570e2ed3d652fa4a7",
    "signature": "0xfcfc97fa5b6d645bbd781cbb5fd634d33f8ef14aa9a067fa5183d6ca8e01f78e332996b31ed4c26a32fd2eefd2db48539569133fbf4bbb69a6c15c16914dbbf71b",
    "signer": "0x64B0DA55A684D51d3EF114Fe644eac7db132fDb7",
    "userId": "121304325"
  }
}