{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300785",
    "entityType": "User",
    "nonce": "0xee7f2d2034c758350469a5f7c937d94db043d2452d4600d9dc463f2d1c207094",
    "signature": "0xc2b53df3d9d0d6a221ec36f4125bf163f98b88b40b5b4f9d1c2be48ea677eb8e4eaeee7269dc6deda37876f31a06486e725449ce5474c7fa74e18a2e432d414a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}