{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60a61a554c238c912af52107007205465510e17293eeb28e1e7acf0ba9ed7c76",
    "signature": "0xd6e43572eec6cb23bfc9180aaf4266fd7e30acc3e07df229aa1fb422c20f2d2558b47e5cb38006fef0c923972774d0b197bb62a5613bb829f3f86cded888f60f1b",
    "signer": "0xF289E74EB5E141E367e98D78c951C98e093E6Ae4",
    "userId": "273007816"
  }
}