{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73a3a189551845f40325e87b268389120897ba8517b45c48985f061fe094561f",
    "signature": "0x0c37b5c98fbfbd72d0076dd8d3db6e96ef21b6d56a1ad432eee9ca918113a6743e851e99ae4e07440f2258e4f5d336dc600302c590a702f2e486440075331e5b1b",
    "signer": "0x07eE81b07129e6E265a7EDDff2077D1c1d9215a2",
    "userId": "974720661"
  }
}