{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283329846",
    "entityType": "User",
    "nonce": "0x1bf76a77c87f0bf627fba68b83edd160ea5c92763aa208e589317821e075732e",
    "signature": "0xb4d39e8a9a45d6df9875490f3f2dd5ab492ac6512ac79cca5fba18fc997094df7f6afc6427803189236375a3ee80f592d645386ca19d7f60136917edeb06f84a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}