{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d9a5bbedbb014bc8021f916b820014e1251e2539d3334269530b8f592a977a1",
    "signature": "0x2c20f76cb784e261f22a1f51bfdc6135228731723dec61dff30259156683432c5931392ccbde3fd18268d364a05a4465af4e04eb6cd8809b4615666a05c63b961c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}