{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7603a64c1a75ab4da29c5a6f3fb933f74dd88288b881cf2f2734227cc6509036",
    "signature": "0xc4da0695c4a3e37cafaab95137599168e861bbc7c17bc0795c3b51654b17ca2d3900222ac4eeceed5f5df1353fef76af9ecc3dfe80808e57399c01f25236bad21b",
    "signer": "0x2Ee26b90076E4CafA40Ac3ed38Bd98Fc7D5300C2",
    "userId": "36728862"
  }
}