{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670080156",
    "entityType": "User",
    "nonce": "0x21739a343350ae70b7f887fc49d1478bb9f7a534264effe7ae93a106ef34efa7",
    "signature": "0x96489a01bead9ffcdb3343d16815f7f3dd6a18b448e229d4b7947b8e616057ee716db8ea9868b305c3639d08880232b5244ef82ddeb713ebf68cb442c44b1a921c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}