{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a6323bd8da5ce41eec38236e34b32f6cac6df2a5ca9e1a67cd16ae437f6869c",
    "signature": "0x44ca266889db3a7241771cd084687db7bfe3543317d50f64a74d7e1be00fa9fa3eaa89a76ec5fff17f063b3eed5c8f839145536178db1ce0b0a1e88fb4cfbdf11b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}