{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb0ff1c5702aab378019edd29dd9cf4844478d221cfc44ff1902db3e3c35dde79",
    "signature": "0x16d8e37bb2b0165af82a902a528c43371affe5ff3f7fe9cbd95c661067f08cd835cc012649536b0c3ad3a73b4892ece2527b73f3a921810bc2d394440d5de65a1c",
    "signer": "0x1d009c86Ce1698b37075364c62F7FDD753e86CaD",
    "userId": "155850555"
  }
}