{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342118",
    "entityType": "User",
    "nonce": "0x74a3d64308d9c8dd3a222d12fca01270288d4204b22b707f6f891f6a66f5e9bd",
    "signature": "0xa584a0c7a56e3bf51b97289eaf88bbbb2e02e4c8dbe486a79b3878f4130d5fa81926e07d84b2703c7266071edd8fa442eadb12891911b7dda25d7cc1df331e5b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}