{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcda4a31d7530b652c1fb10eb5ae3e53e11454993f1ebfc07324faec40359755a",
    "signature": "0x8a6a2fdec46f9a1dd4f2fbc28b82fd597e9848834e38bef2d2b847079b70f0806eead09a97ed33a74ff3d78e5833c01b221ebc5ae748a234e9403b7bcf218b9d1c",
    "signer": "0x5097d1dEf6E49DE9d772110fd50dA11e5D20c1BF",
    "userId": "512742771"
  }
}