{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1655515",
    "entityType": "User",
    "nonce": "0x6dc9f758333c167045f16b5b15eff91e8b123cc83b6b490e06f5799d43b5d8dc",
    "signature": "0x43c8995dc127727c7f5d74c5085a4b6304650aeab60d0a0f374b2bd537ea4ce810e4dd738839a28ca2084c56bfe3feacc64a5d14f06641c801d6b4784499c13d1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}