{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298506",
    "entityType": "User",
    "nonce": "0x67319016e888bd3f1711ea21a2d8de5396ee0febd850467db996e5f04809b185",
    "signature": "0x0ff6e428037ac6729bccde70e9ea80c517cb742c703b0d6f628ddcd5c5b569323fa958436383eec185c5e47c51ea1daf86ebc00801a5851e0910f5826b4ea1421b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}