{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe707a34e6465ef56bb301c1579f2b1d5d67649f328e752b5af13835751d89f05",
    "signature": "0x9e6ac64bbf003461e2212ccb94a6aaf62dcdf7080650d7d13100f6bf42c6031363eed09dc2b794636c069c016130f772c34701f95066853af6ee3f5dda0ab48e1c",
    "signer": "0x6952A1248B76C37989a0BfBbd3f56FF1bD809520",
    "userId": "450939778"
  }
}