{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "744488666",
    "entityType": "User",
    "nonce": "0xfcdea061cc8f3cfee6be72337b336c9b01f5abf81520fc062cee1405510afba5",
    "signature": "0xb26545f5d30e9511960f445bb39ef3aad75dfdb0344a792dfc57cb81597c82a678ecc6226e13b791a663df4d70f5bab0e8c618cd2dd2eca9254545ab603847281b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}