{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7500",
    "entityType": "User",
    "nonce": "0xfb90614ffea6a8d36709ddf98152a349ebe32a0549719e70d1c3d5ad4ae0f13e",
    "signature": "0x730dee369125de52cbe18d8114266eee061dfa823963b234913e58c7dacc58e61a313408d1c67f4441f846450334085a813a906ef0f5ee9c4586ff8e22354d3e1b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}