{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452044596",
    "entityType": "User",
    "nonce": "0x775fe89831ac481667cc313c3357f9744833ad06208eee8c5b66736ac631d8e0",
    "signature": "0x89a3f3ad77a5e8aed08db50786e31d81a6d39512845786615107a5dd5deac0f80d6c66be840a154701850c9b369b9623600665d6d856d0fe1f35e85f0b7b86771c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}