{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620380",
    "entityType": "User",
    "nonce": "0x017783cba59114d47335299a900a7dbe40729b7441786a993e957a8a71899697",
    "signature": "0xc090ab3655d5be75ca3855c40784b0040bbe0357e308a37bbb0e2ec19040e1c7254dbc8531e7a6c5245fcc6394218a7b5bd6892b0e60c9527755e2abb821dc301c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}