{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f68fa1711a51f831af141ac1ef754ff4c064baa34658637ff2f51caea040721",
    "signature": "0x00018013dd2fec20cf3dbd7faeedf52e02cacd11b9a4bbf33a2c1f8af71b64574ca6c0bc2c5b4197309853bd64242f6901dd7c326df808a1d4863c60c31635031b",
    "signer": "0xf98D33de6104208268148d4086B2CE26b3F995Fa",
    "userId": "139309135"
  }
}