{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0d88088be3fece95c48a90fe9d80191ac56f9a48ba1926e7a7bc0578637f0a8f",
    "signature": "0xaea4ad873b3e99cf6f765c59270645e9767db8ca9cc5479d5febf8df31f0ab406dc47bfdaa9daa7a53b8336687b90dfaef80019758e5eb83567f49e3fa8325491b",
    "signer": "0xE5dE1D386bF717Ed8b141c490Ce0ABa4251eE554",
    "userId": "398183274"
  }
}