{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250198",
    "entityType": "User",
    "nonce": "0xe5f3586ee3baddb24f194129f38d4117b299b3a2860bb4bb565ec0cbffa239a2",
    "signature": "0x9c0fbad187453cf8c65c9a6674ae7e69829cf6b7c9239ec2cb5d18b90a75d89f3117163d3e50067b01bcd18d134e122d443f5beac9ef8b82003ade90119fdb251b",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}