{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x29efeec851efe92f61278649f8b4883c0410ac7e66a113aa796aba4bc86572c4",
    "signature": "0xa225fc48a2ebacfe4f1ba616e9c6b287c673b423996e8c8edb5fc51ef2ea7dbc53f5ae2856caa4ed768d4405be4b12f28da2400fa888d60e0b5cede7ef22106d1b",
    "signer": "0x88DE6E278423E69808AB03c717d8847C333CD1B6",
    "userId": "959617631"
  }
}