{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219603",
    "entityType": "User",
    "nonce": "0x43c6626ebf901df30b2f7a43bfcb2b094631a7ce02413f4f88b18621d9ec50b6",
    "signature": "0x72db4011e6ae6c7b6cf038553d3534ea8b4a076483af9bba0213259d0c5db4d57ce5daa4e39d40c3a83174d1a35e207c74ee9ce237c5b9a0e7de37fdac75c0981c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}