{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb61852b2a5aadc2773f4c2ea91b9b6e648510bda51c972bbe858b6e506c104d1",
    "signature": "0x9aa6d98390203a545673df2808b0cc259ab37115db88f18a95f955f99d90c1c10af05ffcc4e48974ea656b0bd37c62c74425a104c6f440ecb3939ef325277bf21c",
    "signer": "0xec765680D4a9F36cCBA63DAb73040C6a5E66dB3D",
    "userId": "542316337"
  }
}