{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322398",
    "entityType": "User",
    "nonce": "0x38e258eee0bb70d9785ac070b503a24642d78aa53c2e0196c33579bdb701cb9c",
    "signature": "0xdd0467a121efebab99fa91d75ea7e8936385fa83d9a1050da3925a6441afb6984be7f104da8822d9e9b9ab48734de726f0f34117a1dd1d40050c5d64d5f9e19d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}