{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03162d32a38d41f842c03603b9c9e073a1dae74b1619bbc964762209f26e272a",
    "signature": "0x9f658a126e4c4b6305ae1d54b3daa362c68709225dfd33a2a28bdc0463b33c12671797ff95dd7f8d151b14f62bd9b4e38b758f920ccdbde895c12ffe231373561b",
    "signer": "0xEc377b67328447935401Ebc4Ed75Ec0B2217Cf0b",
    "userId": "28240798"
  }
}