{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c571e4c82b40af2e5757a7646aae42e242b001459fae73328a7c134a73a9389",
    "signature": "0x3d833eeaaa43d69fe7b048f730c95082dc97ab018cd4039ed6dc1a7de7ce23037f8e92bc960abf2ee976a2588e605c442cea471a5ad1f60f2dde90e390609fb21c",
    "signer": "0x4Ee61A3294E3fEd73B519f645aB36ccf1eccAC8B",
    "userId": "48891931"
  }
}