{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200900647",
    "entityType": "User",
    "nonce": "0xebc2fe8b536e9dfc99de94102d63c9e8089d780cc062986e69ec02a6007a0e29",
    "signature": "0xbe3aface26fbba99b94d319d816a99f19e5baf74fa85664f578559e5249c95760712b4c5c60daba5846e17f677651b37de284bf640a09285fc23e09b3730b3b11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}