{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1866428",
    "entityType": "User",
    "nonce": "0x287a0696f2d60062dc4d044630e02c7755a25b8a253aec3bf755aa5fd1c0b9cf",
    "signature": "0x2c51d410aee132d3e4a9e4230a0596f02622279866f7e0c0b764e54bad35f070226602a73677a42b9304343018fc36c0d547b05cb34f1926cd31639a178d57341c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}