{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a283ae5823a912dba94f5cc11f6e722546a873436e2f9c7cddab544ac72e66e",
    "signature": "0xfac1f7a4a204cdb50ccbead4882512f9be8f5f4a9b967079c17f4c7f67e79a7e5c814d53657c4e4cb1ae28f7d8bf7c9299bf5e93f5020081f873abbf003c20e21b",
    "signer": "0xdC686913D5E6Ad58e7A1C0756B893a28b450eC55",
    "userId": "842416604"
  }
}