{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1e827fe67010a08b3961b92af96cddd969f630900d8e3390aaa87eea46436fd",
    "signature": "0xa8b1d54478f84153d9e507767251c9c61f4d22bf1248ca91ad3e069c28d190d9480662db45db68e784ddaefd9e569b3b9af945ec19fa48c1abd20d2c3f1bda441c",
    "signer": "0x7F21Afd5FA28FD68C88cB98bE0A42Ea238BBEFc5",
    "userId": "594710715"
  }
}