{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309588",
    "entityType": "User",
    "nonce": "0xd3b208af97c654e2501e540334cd25a72d911967883041f8561e6eaa0f44d179",
    "signature": "0x77d96ecd01181309052ea0472a8acb0dc7b729046e4ac20fdca2e474c6f9ae426d5f97bed7f47cdf2001c1f02aa561d40ed5f8ddf97f69896b2a82899a60c3531c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}