{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "868248368",
    "entityType": "User",
    "nonce": "0x7787f654e34b7e9bea17e09f7cd295460b969b3d0d9dc00b68898fc2831608bb",
    "signature": "0xbc3d4c60e3cd09d29f1ad0d90b2d9598bbecba395180cd9d23fc907bb2cc1f6a121591c875c6eb899ca7b6c48d721db4d408ce2b5926512ba630c483f8444a181c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}