{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0xd25f33e0fd4d4c5d3e25d74a904c8d158b8a6dc070bffd41d1a86522e35a99f8",
    "signature": "0x1cfe045519e01b2c263d72d76150cef08dbc5d182079230fef52da34d2d7309263907ef82123d93e260059b9796ba0dd4c608a4379ea7a02b6a716b905a6af5c1b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}