{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a222187618c9799b0ee307728f32dc70b5b7923bf21a4a3ea3d005da9251427",
    "signature": "0x3d45a9bb2f8689c18e578b50524d85b33e1b80f5f08fc97b7dd777ffbbc8037e32dda4806572fa6b48f2184a8b229d1500e90d77481ba9fe85dafcaaa6a124ff1c",
    "signer": "0x7254B94fA9e18b0A61250249Cf713a4b7fC91FA6",
    "userId": "192864997"
  }
}