{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "246308164",
    "entityType": "User",
    "nonce": "0x4b5046d03d38e404d9d2ae4ee01c4dec754bbf808475bbe00a7a401abfb17a38",
    "signature": "0xd921873bc787b945f21928e4ec34383b2a6af07c831e05a9fb549603afe8f80c07fa02501cc62dfd7c127059490df3d22ace802528d2ba6e845206a37954bf9c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}