{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420",
    "entityType": "User",
    "nonce": "0x1fdf47828d6542ae24b9ddafe654a331a3f3cd4fa2ce102d00304ffea3e5b461",
    "signature": "0xf459667cb2dd1e517df5edeb4539fead15be6735d6bd07a186a4ac0235c17a04430a7a397f236a7436dcbd811c92cc6f77d409922065d6f8c84cca2483f434cd1c",
    "signer": "0x7a252808bd60a26fe5184c95eb104CfADdA8D4C1",
    "userId": "186415718"
  }
}