{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x406b3d80635ff7d2fffadebec331ecb92821aec2df6682ae0a2c78453ab6c26a",
    "signature": "0x921daccc66f27cb3ccc53de031a38dd8be2c298853abcc93cb686150afe6b8d1115ee549cb5d36a9a50a91109c61b54d88676b0e5897e3236e6f9046928cd2e61c",
    "signer": "0x62a1316444ce6d55D51fd4Ebe5e68bBD02AE5320",
    "userId": "680407952"
  }
}