{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394700",
    "entityType": "User",
    "nonce": "0xc888f8ea11b8cc8e894950a3cc4a0d194957a6cb8c3a99f08a5cf641da15b9d7",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}