{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7519",
    "entityType": "User",
    "nonce": "0x4108942adaf1f823e7e8b0d371e3cb0a1b425b0b7cf4dd79428212dff85d62dc",
    "signature": "0x3c4745b708c3577a046722695bf4597b89fe8f6d5de9506a1d684b38abc3a1766a56a24c2bd2ed2d350cee3331e2819b5992c96fdd0aee1568d2441de3bd135a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}