{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6930a026d928d34be0e6dc0867e1f3f0c0b3b384e87669002f8b6149a11eee23",
    "signature": "0x88ac3d0df459d975d08ebdc958dec163291511ebeabaf88a605d54af0a7c4f2b64f0a63ab91ac17604f946248fe737c80828ec02c91eac0c17834d1a308ea9471b",
    "signer": "0x4f47455CFc3De025Eb8020455e21493Afbd9E4ab",
    "userId": "75936402"
  }
}