{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7aca4214251b4d317e423337f70e921726a1acffec3d94fee93f908a7fd8c797",
    "signature": "0x92b71d7e40ad411daa4962f07cf51af258cbccf776f768c3709362a907429555332d89302c218336527c1b4596b49d53a58ca06aceb212a787a63fd4c0e3efcd1c",
    "signer": "0xaCa7953CD273B28Ac40A1949c2f4E31562A30c91",
    "userId": "223927047"
  }
}