{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa32ae8cd238f9fc3aee3f055e15a04590a0bc5c642e00344928472bf4fca100a",
    "signature": "0xad5a9b02b73efe97e2842e7e1d97797b0a8182eb60a3d8e052a4c9dfd03f786c5366657076593e2a2f94133fbdf542462233b252711ef4115b1be1cc15e268001b",
    "signer": "0x0D2d70e30BFfcD3179CcbC30e6bB86B42EEF8408",
    "userId": "294957460"
  }
}