{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "700413693",
    "entityType": "User",
    "nonce": "0x9f62ce44d3a6c94c9837ad7584c2046ce681cd6e3d920cfe13b45ffa05dfb0b4",
    "signature": "0x9a4bd4ac37965049f2494d1ced1f48a2379cb1f5b564f49e676b0ab7cee8031135e6f2c6bef051b2ace30fca3ad59dd6ebbaa947e6e3c7a6e1d3ee2934642de41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}