{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x52da425deb63f5c0f95f2ceb5b9515457006dfac62cdc8d04c2ba5e715986166",
    "signature": "0x4f918569bd4e86ba9e57a440e13ed49b9799d5fd0261c078d76eca18a91646c102cdff160b70f8c647a67ae36159922d0deee4d7e61cf2701c75c663463a06d11b",
    "signer": "0x07cB076DaACCA202F3ffB2dF4A778b16AcEf28Ee",
    "userId": "998685050"
  }
}