{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144905",
    "entityType": "User",
    "nonce": "0x890972a2037db4bc4d9876407f3d321f28f27eb857025f235386b78b2ce2f670",
    "signature": "0x3d447b3cbf62da72d0a0267b29b96dc1c0b8e9f6f4268a4ce6dc94958c42265579584feb52fefaed70979fc6420a45a14bbfb2df1f2186bf2bc7fb2c014aa2571c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}