{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389938",
    "entityType": "User",
    "nonce": "0x289db9b3ccafc199a55ca1e0de46454f59cd19dad875955c8f4430e5f0f31cc2",
    "signature": "0x6b4fe8120df4a579ccb95c05e5da1fe8e39f26f3cafbbc75b58ed9414b5ae4b11df122c528ffb02fe5bcf8db03152e1d099ba1c2e6b83c2569b9d20a72d13dcf1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}