{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x748b8a3317feb04515bd2c1a55f0ef09788b6dd02f4914b39cb86a46779709b1",
    "signature": "0xc85650801c41c78ebb85a73d327aabf178a4e221073ff1e6dace35c234eea3c03b6f79cd2af1fdad1459b5d567be56b1401d5af37e6e20344be112cdedae32e21c",
    "signer": "0xa84E81B6262C2A5AAe7951aD11d83898e66a841F",
    "userId": "429430854"
  }
}