{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143579",
    "entityType": "User",
    "nonce": "0xce5ac92e51339a66ab52e2d0beb0d7e1d81ed2e5c5f1d1041c7b5eb23cf9a387",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}