{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xd913c4fee8485833d48aaeee516fec2d3a0f8fe99892a7de1f4fbdd57c6d22b3",
    "signature": "0xa0734ee1ede99c4061493a075af640b8e514c31f53b4a769af0f0ec8e3bc22430129b5d38151fba44afee9f6728c464ec01b1a9e6aebb80b1ff7f45fab61dada1c",
    "signer": "0x7a991F28f8c946030bE26Eb8408414771247985d",
    "userId": "514559071"
  }
}