{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "594615071",
    "entityType": "User",
    "nonce": "0x7a47e5e532a4af4a4669554416f6c7bf9a40fbb6322b3f5808c5121d70d84196",
    "signature": "0xcd2b948cf8e19e73fb4a11a6b62d2d04d1a4166fa96e3539219591921687f5a64e7e60b5730b6292561ea1241899f4d78c22732396fb1b0878684ed639b960f51c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}