{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x878f0fbb78d12006ac80106acb856928e478dfb2af01c1e4f1c2a453f855aba4",
    "signature": "0x2bc4c679487c2843f876b0d153a1858f9ebeeefdcf800b5d338f13a9e587a1d263b1f326afdb23fdf5fbde67a094ce9ed11c3a50712f054fa572c720fc625cdd1c",
    "signer": "0x5C34D43C7A4DB9967121D6CdC2b22bFAAdf301Bc",
    "userId": "916627382"
  }
}