{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381991",
    "entityType": "User",
    "nonce": "0xa3d7da0b6a03966dbc9bd658c392eafdcc96c047a8f6283f3dea439b08ee9f8f",
    "signature": "0xa00fe30cbb19408864a6083d68157ac2552fd8d8651db53958f9a0813a2f185b0808a7dfeaecd00e0f9d1f5d0ae0b746e6e04e70e82b6345c1a42cc5741b89f81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}