{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2746455ab4c353ea7533217d3d68420f62e99f16fbd13ee9d5cf5a6ae45ce57d",
    "signature": "0xf3659be5afd7feb10a59026128899af75128c0194759595a16995b1a0a28cfdf366ba402e360aa03d03879030d005352f77943fd359747a6ff6665192af534e01b",
    "signer": "0xF43D6c981f19D5bea18b47C6E740E7E553E9f1C8",
    "userId": "850592763"
  }
}