{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00f9c492cf9b5d226803a3581d957bfd729f90eab39411f3324b09ea8c85d11e",
    "signature": "0x74ff69b28f6d134ce6a3e6ecbaf9b77fa5bce457324541f839b81fba8291026a5aa87712204f9090f0b72dde960d01e62d3f492b8f81fe2c129e7cc1301a16451c",
    "signer": "0x8ae83e511b46C8F9d4997cdEEc94864368bBAf30",
    "userId": "568118879"
  }
}