{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15555316",
    "entityType": "User",
    "nonce": "0x4054b17ed15a1f83d630f50564b4a83633ef3cc51c5c94d79e65c7c81b8d088b",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}