{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343259028",
    "entityType": "User",
    "nonce": "0x4a6e737995b6c4d20f85ca2b8a67fa8d87a2666fcf41a381b7f2ede0ed680c0a",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}