{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x565054be80078fcc031b9d68422098e823dc69ba4e06dca109aba82a280bdffb",
    "signature": "0xa8635fce598d255e8375ea3b121eb32f462696e43b2def9e7d739d50e5dd9ad13e6f2ee1782d2e215b1d26d6f3f6dae8f37d3d722d7c15ac5e28c1ce5824e64e1b",
    "signer": "0x7BfC7B3BEA8c31dF1FFbb939Fe0495F4eb2c218F",
    "userId": "502244184"
  }
}