{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121176",
    "entityType": "User",
    "nonce": "0x5373a57ed6b2be899e08d70d813010ec3d876ba245190c8ffb7968c413c91d2c",
    "signature": "0x20f200674aa9fb913fdf655c6e45812ec8f09491ecfbc16cbce2d0aec8ce796a1921fced5a9580e6bbd76b464fcfb480278f99efbc5486cc9ff5bf1f2ab254421b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}