{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74d8162ca2d7bf7a72d8e944dcb3ea5d42b126d1ff12b9e36181ffe0b18f7354",
    "signature": "0x5bb1d0ea9d694adc588df0a361a31cd624ecf2507e777150b7503991d20146e9767ef20f0f9838c0dd125b172cfd6be89c91ca6b3617a1021e0a2ae57de332c11c",
    "signer": "0x3A2C2d6B2b96B324aEfe2Fb682DD70531b2De7d0",
    "userId": "328274267"
  }
}