{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74d2b9563d4eb0b1ec50b73b4a39d6d86f55b2121012c0321b3d79baf8e107f1",
    "signature": "0x8445e8012fff8215aa5b568e9777364c86343500b837f4e10b4c5586e252a40c1e327ce931ab76f459a62252b4c26932ae2c1a4d615c9fe0acad09ff333a1b0b1c",
    "signer": "0x380Fe18384267CA159c9Db6737B959099be2a515",
    "userId": "381292764"
  }
}