{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "619259",
    "entityType": "User",
    "nonce": "0x594ac6476e4f8b20a9cfc066c8d78277d21238ba1e5ab3fb041389be81a5398a",
    "signature": "0xd383aacee19885d2d784653c642efc0cb726197d8a7a0a1364a8730caf104de17aefac8967e2f4de1b9375767f983a0a37dbab85fbb9be0682034a32167026d31b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}