{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x401744a120e7ed286d5585d3e183718cfdd9a445c1b70e48a86ba7731aa2f7c7",
    "signature": "0x55f2ca5009aa65f5eb1b14d64239471e4893301ad16ccd66169f0e38dda5380e244e36b25e01cea9acc8de355660d19a090ed7c9961b0184391d10dc59a17b351c",
    "signer": "0xD1EAb9B9a434D0CAeF0dB1c45681838f32F73f25",
    "userId": "798249319"
  }
}